OK I'm having problems with a 79 enticer 340. It starts like a charm, i let it idle for a couple minutes, then ride it for a click or two for it to properly run. It kinda bogs during this stage, but this has always been the case since I've had the sled and normally after that click or two she would jut fly... Well she still flies after she's warmed up but now im finding she loses all her power after maybe 5-10 minutes of riding. If i slow down and give her throttle again she bogs, is really slow off the line, and takes FOREVER to pick up speed (if u want to call it speed). I replaced the spark plugs, but nothing.. Any ideas/help would be great, thanks.